package com.GetIp;

import java.io.IOException;
import java.net.URLConnection;
import java.util.Set;
import java.util.Map;
import java.net.URL;
import java.net.URLConnection;
public class Main101 {
    public static void main(String[] args)throws IOException
    {
        URL url=new URL("http://www.baidu.com");
        URLConnection conn=url.openConnection();
        Map headers=conn.getHeaderFields();
        Set<String> keys=headers.keySet();
        for(String key:keys){
            String val= conn.getHeaderField(key);
            System.out.println(key+""+val);
        }
        System.out.println(conn.getLastModified());
    }
}
